In his first-ever interview, the sole Australian survivor of the Waco siege has revealed to 60 Minutes what really took place during the 51-day stand-off, and why he believes crazed cult leader David Koresh will one day return to Earth as the son of God.

On Sunday the conservative columnist Andrew Bolt suggested to the Prime Minister in a TV interview that his communications minister looked like he had "his eye on your job".

Mr Turnbull yesterday rubbished Mr Bolt and his comments, calling them "unhinged" and "bordering on demented". He denied he had any intention to run to take Mr Abbott's job as leader.

It was Abbott who deposed Mr Turnbull as leader in December 2009 when a spill gave him the job by just one vote.

The good news in the poll for Mr Abbott is that among Liberal voters he is the most popular leader by far with 43 percent preferring him as leader to Mr Turnbull's 27 percent.

It also found the communications minister is the only real threat, with the next most popular actual Liberal politicians being Joe Hockey (6 percent), Julie Bishop (4 percent) and Scott Morrison and Christopher Pyne on 1 percent or less.